Complex Evaluator Column Code Request

Help & Support
1

If anyone is up for the challenge...
If I'm understanding Evaluator Columns correctly, this logic is probably possible, though I don't know if all of the needed properties of things exist on my laptop (I think they probably do).

image
image530×505 41.5 KB

And... My apologies for this terrible pseudo code. LOL

If (is folder)
	"Dirs: " & [number of subfolders (non recursive)] & ", Files: " & [number of files]
If (is image)
	[width in pixels] & " x " & [height in pixels]
If (is .PDF or is .Doc*)
	"Pages: " & [number of pages]
If (is audio)
	[length in minutes]
If (is .DLL or is .ICL)
	[number of .ICO files in library]
Else (none of the previous match)
	[Size in MB]

Does this even makes sense to folks?

2

The Swiss Army Knife of eval columns :wink:

I don't think all info is available, but here's a start:

if(is_dir) return "...";

if(Match(fullpath, "grp:Images", "f")) return picwidth + "x" + picheight;

if(ext=="pdf" || ext=="doc") return "Pages: " + pages;

if(Match(fullpath, "grp:Music", "f")) return mp3songlength;

if(ext=="dll" || ext=="icl") return "...";

size
XML 
<?xml version="1.0"?>
<evalcolumn align="0" attrrefresh="no" autorefresh="no" foldertype="all" keyword="t48959" maxstars="5" namerefresh="no" reversesort="no" title="t48959" type="0">if(is_dir) return &quot;...&quot;;

if(Match(fullpath, &quot;grp:Images&quot;, &quot;f&quot;)) return picwidth + &quot;x&quot; + picheight;

if(ext==&quot;pdf&quot; || ext==&quot;doc&quot;) return &quot;Pages: &quot; + pages;

if(Match(fullpath, &quot;grp:Music&quot;, &quot;f&quot;)) return mp3songlength;

if(ext==&quot;dll&quot; || ext==&quot;icl&quot;) return &quot;...&quot;;

size</evalcolumn>
2 Likes
3

Thanks Ixp, that does help!

Incidentally... It's too bad that a person can't view the 'metadata' of the various default properties/info, to get the corresponding Evaluator definition. For example, there is a 'Files' column that can be added, which will return the number of files in a folder. There is no clue what the corresponding Evaluator definition would be though.

4

Here's your updated first line:

if (is_dir) return "Dirs: " + dircount + ", Files: " + filecount;

Counting the .ico files is on you :slight_smile:

1 Like
5

LOL. You've gotten most of it figured out for me -- So many thanks!

Question though: how do you know what words to use? For example "dircount" and "filecount". Are those in the documentation somewhere?

6

Yes.

Keywords for Columns - dircount

You can also add the columns that interest you to the file display and get their names with

ClipCopy COLUMNS

ClipCopy

1 Like
7

Very cool! Also I just found the grammar and stuff in the Evaluator section of the help docs. I had not seen that part before. I will study this info and I have marked this thread as "Solved." Thanks again, Sir!

8

Sorry about resurrecting this thread, after previously marking it answered... But how does a person set up the Evaluator Columns to automatically update? The 'size' and 'pixel' components seem to automatically show the correct information, but the "Dir: Files:" one does not.

lxp's code, from above, looks like:

if (is_dir) return "Dirs: " + dircount + ", Files: " + filecount;

If I make a change in the 'Folder Formats' dialog, then click save, the number of Dirs and Files does get updated and returned, but if I just browse to a folder, then it appears as in the below screenshot. F5 (refresh) does not help.

image
image966×458 41.5 KB

9

I guess you stumbled upon this issue:

Eval columns that access script columns don't refresh properly

(Similar here)

10

That's a drag. But yeah, it appears so. Thanks lxp!